Finding the Third Proportional to 68,399 and 105,069

Step by Step Solution

1. Step 1: Write the proportion equation
   68,399 : 105,069 = 105,069 : x
2. Step 2: Convert to fraction form
   68,399/105,069 = 105,069/x
3. Step 3: Cross multiply
   68,399x = 105,069 × 105,069
4. Step 4: Simplify right side
   68,399x = 11,039,494,761
5. Step 5: Solve for x
   x = 11,039,494,761/68,399
6. Step 6: Final answer
   x = 161,398.48